Plantronics EncorePro HW540-CIS Cisco IP phone Certified headset. It has a innovative 3-in-1 headset design. If you don't like one wearing style, you can easily switch to another. EncorePro HW540 is designed with quality and for all day comfort. All 3 styles is simple to convert and is secure to wear with any style you choose. The Plantronics HW540-CIS provides high--quality audio, a flexible microphone with visual positioning guides, soft ear cushions, and super durable and lightweight materials for all day use. Retail Price $165.00